Invention Grant
US08215227B2 Detecting of faults in a valve system and a fault tolerant control 失效
检测阀门系统中的故障和容错控制

  • Patent Title: Detecting of faults in a valve system and a fault tolerant control
  • Patent Title (中): 检测阀门系统中的故障和容错控制
  • Application No.: US11991559
    Application Date: 2006-09-06
  • Publication No.: US08215227B2
    Publication Date: 2012-07-10
  • Inventor: Lauri SiivonenMatti Linjama
  • Applicant: Lauri SiivonenMatti Linjama
  • Applicant Address: DE Stuttgart
  • Assignee: Robert Bosch GmbH
  • Current Assignee: Robert Bosch GmbH
  • Current Assignee Address: DE Stuttgart
  • Agency: Venable LLP
  • Agent Eric J. Franklin
  • Priority: FI20055479 20050906
  • International Application: PCT/FI2006/050381 WO 20060906
  • International Announcement: WO2007/028863 WO 20070315
  • Main IPC: F15B19/00
  • IPC: F15B19/00 F15B11/04
Detecting of faults in a valve system and a fault tolerant control
Abstract:
In a method for controlling a valve system controlling an actuator, the first direction of motion of the actuator is controlled solely by the first and the second valve series; or, its second direction of motion is controlled solely by the third and the fourth valve series; and an error caused by a fault situation in the control of the actuator is compensated for by using, for the control of the first direction of motion, also the third valve series, the fourth valve series, or both of them; or, an error in the control of the actuator caused by a fault situation is compensated for by using, for the control of the second direction of motion, also the first valve series, the second valve series, or both of them. In the method, for searching for faults in the valve system controlling the actuator, the pressure of the inlet port of the valve system, the pressure of the first working port, and the pressure of the outlet port are determined; one or more valves of the first valve series and one or more valves of the second valve series are opened; the measured pressure of the first working port is compared with a situation corresponding to a system operating correctly; and on the basis of the comparison it is concluded whether the single valve is faulty or not.
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